Interstates Traveled

Last update: 5/9/2008

1- and 2-Digit Interstates

I-4

First: 1978, Most recent: 2006

Clinched!

I-5

First: 1985, Most recent: 2007
WA|OR OR|CA
Bellingham, Washington, to Exit 296 in Oregon. Grants Pass, Oregon, to Gold Hill, Oregon. Corning, California, to Jct. I-505, California. Crossed at Sacramento, California. Jct. I-580, California, to Jct. California 152. Los Angeles, California, to southern terminus at the Mexican border.

I-8

First: 2004, Most recent: 2004
AZ|CA
Eastern terminus at I-10 to near Casa Grande, Arizona. San Diego, California area.

I-10

First: 198?, Most recent: 2007
FL|AL AL|MS MS|LA LA|TX TX|NM NM|AZ AZ|CA
Eastern terminus near Jacksonville, Florida to Sanderson, Florida. Jct. I-75, Florida, to Jct. Texas 71 in Texas. Jct. I-37 in San Antonio, Texas, to Jct. I-25 in Las Cruces, New Mexico. Deming, New Mexico, to Jct. I-17 North in Phoenix. Ehrenberg, Arizona to western terminus in Santa Monica, California.
Clinched in Alabama, Mississippi, Lousiana, California.

I-12

First: 2003, Most recent: 2005

Clinched!

I-15

First: 1985, Most recent: 2007
MT|ID ID|UT UT|AZ AZ|CA
Multiplex with I-90 in Montana. Jct of I-84 West to Provo, Utah. Glendale, Nevada, to Jct. California 78 in Escondido, California.

I-16

First: 198?, Most recent: 2007

Eastern terminus in Savannah, Georgia to Jct. I-95. Crossed on US 301. Crossed on US 1. Jct. US 129 to western terminus in Macon, Georgia.

I-17

First: 2003, Most recent: 2004

Clinched!

I-19

First: 2003, Most recent: 2004

Northern terminus to Exit 99 in Tucson.

I-20

First: 198?, Most recent: 2007
SC|GA GA|AL AL|MS MS|LA LA|TX
Eastern terminus at I-95 to Jct. US 15. Columbia, South Carolina, to Augusta, Georgia. Crossed on US 441 in Georgia. Eastern Jct. I-285, Georgia, to Jct. I-75/I-85, Georgia. Crossed on I-65 in Alabama. Jackson, Mississippi, to Tallulah, Louisiana. Jct. I-49, Louisiana, to Roscoe, Texas.

I-24

First: 1997, Most recent: 2007
IL|KY KY|TN TN|GA GA|TN
Clinched!

I-25

First: 1977, Most recent: 2008
WY|CO CO|NM
Passed northern end at I-90. Denver, Colorado, to southern terminus in Las Cruces, New Mexico.
Clinched in New Mexico.

I-26

First: 198?, Most recent: 2007
SC|NC NC|TN
Eastern terminus in Charleston, South Carolina, to Jct. I-95. Crossed on US 301. Columbia, South Carolina, area. Crossed on I-85. Jct. US 25 South south of Asheville, North Carolina to 2004 western terminus on I-81.
Clinched in Tennessee.

I-27

First: 2003, Most recent: 2003

Northern terminus in Amarillo, Texas, to the first exit southbound. Lubbock, Texas, area to southern terminus.

I-29

First: 1985?, Most recent: 2003
ND|SD SD|IA IA|MO
Canadian border to Fargo, North Dakota. Sioux Falls, South Dakota, to Jct. I-635 in Kansas City, Missouri, area. Passed southern terminus on I-70 in Missouri.

I-30

First: 2003, Most recent: 2005
AR|TX
Eastern terminus at I-40 in North Little Rock, Arkansas, to Jct. I-630 in Little Rock, Arkansas. Jct. I-430 in Arkansas, to Malvern, Arkansas. Near Arkadelphia, Arkansas, to Jct. I-35W in Fort Worth, Texas. Passed western terminus on I-20.

I-35

First: 1985?, Most recent: 2005
MN|IA IA|MO MO|KS KS|OK OK|TX
Northern terminus in Duluth, Minnesota, to Kansas City, Missouri, including I-35E and I-35W in the Twin Cities. Emporia, Kansas, to Wichita, Kansas. Multiplex with I-40 in Oklahoma City, Oklahoma. I-35W from Jct. US 287 North in Fort Worth, Texas, to Jct. I-30 in Fort Worth, Texas. I-35E from Jct. I-30 in Dallas, Texas, to Jct. I-35 south of DFW. Crossed I-35W in Fort Worth, Texas, on I-20. I-35E/W split south of DFW, Texas, to Jct. I-37 in San Antonio, Texas. Multiplex with I-10 in San Antonio, Texas.
Clinched in Minnesota, Iowa

I-37

First: 2004, Most recent: 2005

Clinched!

I-39

First: 1985, Most recent: 2001
WI|IL
Multiplex with I-90 in Illinois and Wisconsin. Crossed on I-80 in Illinois.

I-40

First: 1977, Most recent: 2008
NC|TN TN|AR AR|OK OK|TX TX|NM NM|AZ AZ|CA
Clinched!

I-43

First: 2007, Most recent: 2007

Becher St. exit in Milwaukee, Wisconsin, to Jct. I-894 North in Wisconsin. Passed western/southern terminus at I-90 in Wisconsin.

I-44

First: 1977, Most recent: 2007
MO|OK OK|TX
Eastern terminus in St. Louis, Missouri, to Oklahoma City, Oklahoma. Jct. US 287 West in Wichita Falls, Texas, to western terminus.
Clinched in Missouri.

I-45

First: 2003, Most recent: 2005

Northern terminus in Dallas, Texas, to Jct. I-610 in Houston, Texas. Jct. I-10 to Jct. Texas 288 in Houston, Texas. Jct I-610 in Houston, Texas, to southern terminus.

I-49

First: 2003

Clinched! Also, Future I-49 Corridor from Lafayette, Louisiana, to New Orleans, Louisiana.

I-55

First: 1985?, Most recent: 2007
IL|MO MO|AR AR|TN TN|MS MS|LA
Northern terminus in Chicago, Illinois, to Lemont, Illinois. Crossed on I-80 in Illinois. Springfield, Illinois, to Festus, Missouri. Just north of Cape Girardeau, Missouri, to New Madrid, Missouri. Just south of New Madrid, Missouri, to Memphis, Tennessee. Jackson, Mississippi, area. Jct. I-12 to southern terminus in Louisiana.

I-57

First: 1997, Most recent: 2007
IL|MO
Crossed on I-80 in Illinois. Jct US 30, Illinois, to Effingham, Illinois. Crossed on US 50 in Illinois. Jct. I-64 to Jct. I-24, Illinois. Passed southern terminus in Missouri on I-55.

I-59

First: 1998, Most recent: 1998
GA|AL AL|MS MS|LA
Passed northern terminus on I-24 in Georgia. Crossed on I-65 in Alabama. US 49 bypass of Hattiesburg, Mississippi. Passed southern terminus on I-10 in Louisiana.

I-64

First: 1985?, Most recent: 2007
VA|WV WV|KY KY|IN IN|IL IL|MO
Hampton Roads, Virginia, to I-81 North Jct, Virginia. Charleston, West Virginia, (probably) to western terminus in Missouri.
Clinched in Kentucky, Indiana, Illinois, Missouri.

I-65

First: 1998?, Most recent: 2007
IN|KY KY|TN TN|AL
Northern terminus at I-90 in Indiana to Jct. US 82 East in Montgomery, Alabama. Passed southern terminus on I-10 in Alabama.
Clinched in Indiana, Kentucky, and Tennessee.

I-66

First: ?, Most recent: 2007
DC|VA
Washington, D.C., at E St. Expressway to western terminus on I-81 in Virginia.

I-68

First: 1999, Most recent: 1999
MD|WV
Cumberland, Maryland, to western terminus at I-79 in West Virginia.
Clinched in West Virginia.

I-69

First: 2001?, Most recent: 2007
MI|IN GAP
Northern (eastern) terminus at Port Huron, Michigan, to Jct. I-94, Michigan. Crossed on I-94 in central Michigan. Crossed on I-80/90 in Indiana. Jct. US 20 in Indiana to southern terminus. Future I-69 from near Houston, Texas, to Corpus Christi, Texas.

I-70

First: 1977, Most recent: 2007
MD|PA PA|WV WV|OH OH|IN IN|IL IL|MO MO|KS KS|CO CO|UT
Eastern terminus in Maryland to Jct. US 29 in Maryland. Crossed at Mount Airy, Maryland. Short stretch in Frederick, Maryland. Crossed on I-81. Breezewood, Pennsylvania, to Jct. US 191 and US 6, Utah.
Clinched in West Virginia, Ohio, Indiana, Illinois, Missouri, Kansas, Colorado.

I-71

First: 1977?, Most recent: 2007
OH|KY
Northern terminus in Cleveland, Ohio, to I-75 split in Kentucky. Passed southern terminus in Louisville, Kentucky, on I-64.
Clinched in Ohio.

I-72

First: 2003, Most recent: 2003

Eastern terminus in Champaign, Illinois, to Jct. I-55 South in Springfield, Illinois.

I-73

I-74

First: 1985?, Most recent: 2007
GAP OH|IN IN|IL IL|IA
Multiplex with I-77 in North Carolina. Eastern "terminus" at Cincinnati, Ohio, to Jct. I-57 in Champaign, Illinois. Jct. I-80, Illinois, to Jct. I-80, Iowa.
Clinched in Ohio and Iowa.

I-75

First: 1978?, Most recent: 2008
MI|OH OH|KY KY|TN TN|GA GA|FL
Northern terminus in Sault Ste. Marie, Michigan, to Flint, Michigan. Jct. I-696 north of Detroit, Michigan, to Jct. US 20/23 in Ohio. Crossed on I-70 in Ohio. Jct. Ohio 4 in Dayton, Ohio, to Jct. I-275 north of Cincinnati, Ohio. Cincinnati, Ohio, to Knoxville, Tennessee. Multiplex with I-40 in Tennessee. Chattanooga, Tennessee, to southern terminus in Miami, Florida.
Clinched in Kentucky, Georgia, Florida.

I-76 (Eastern)

First: 199?, Most recent: 2004
NJ|PA PA|OH
Eastern terminus in New Jersey to Jct. Roosevelt Expressway in Philadelphia, Pennsylvania. Harrisburg, Pennsylvania, to Jct. I-376, Pennsylvania. Crossed on I-79. Jct. I-80 in Ohio to western terminus.
Clinched in New Jersey.

I-76 (Western)

I-77

First: 198?, Most recent: 2006
OH|WV WV|VA VA|NC NC|SC
Cleveland, Ohio, area. Multiplex with I-76 in Akron, Ohio. Crossed on I-70 in Ohio. I-64 to I-79 in West Virginia. Princeton, West Virginia, to southern terminus in Columbia, South Carolina.
Clinched in Virginia, North Carolina, South Carolina.

I-78

First: 198?, Most recent: 2006
NJ|PA
Eastern terminus at New York, New York, to Garden State Parkway, New Jersey. Jct. I-287, New Jersey to western terminus at I-81 in Pennsylvania.
Clinched in Pennsylvania.

I-79

First: 1999, Most recent: 2004
PA|WV
Northern terminus to I-90 in Pennsylvania. Jct. I-80, Pennsylvania, to Jct. I-279 north of Pittsburgh, Pennsylvania. Jct. I-279 south of Pittsburgh, Pennsylvania, to Jct. I-70 in Washington, Pennsylvania. Jct. I-68, West Virginia, to southern terminus at I-64 in West Virginia.

I-80

First: 1977, Most recent: 2008
NJ|PA PA|OH OH|IN IN|IL IL|IA IA|NE NE|WY WY|UT UT|NV NV|CA
Eastern terminus in New Jersey, to Jct. Garden State Parkway. Jct. I-280 in New Jersey to Jct. I-76, Nebraska, except parts near Quad Cities. Jct. Wyoming 789, Wyoming, to Jct. US 191, Wyoming. Wanship, Utah, to western terminus in San Francisco, California.
Clinched in Pennsylvania, Ohio, Indiana, Nevada, California.

I-81

First: 197?, Most recent: 2007
ON|NY NY|PA PA|MD MD|WV WV|VA VA|TN
Passed northern terminus on 1000 Islands Parkway in Ontario. Syracuse, New York, to Cortland, New York. Binghamton, New York, to southern terminus at I-40 in Tennessee.
Clinched in Pennsylvania, Maryland, West Virginia, Virginia, Tennessee.

I-82

First: 1999, Most recent: 1999
WA|OR
Eastern terminus at I-84 in Oregon to Jct. US 12, Washington. Passed western terminus on I-90.
Clinched in Oregon.

I-83

First: 197?, Most recent: 2007
PA|MD
Clinched!

I-84 (Eastern)

First: 197?, Most recent: 2008
CT|NY NY|PA
Eastern terminus at I-90 to south of Jct. US 20 in Sturbridge, Massachusetts. Tolland, Connecticut, to western terminus at I-81 in Pennsylvania.
Clinched in New York, Pennsylvania.

I-84 (Western)

First: 1985?, Most recent: 2006
UT|ID ID|OR
Mountain Green, Utah, to Jct. US 89 South in Ogden, Utah. I-15 split in Ogden, Utah, to Jct. I-82, Oregon. Hood River, Oregon to western terminus at I-5.
Clinched in Idaho.

I-85

First: 1985?, Most recent: 2007
VA|NC NC|SC SC|GA GA|AL
Northern terminus at Petersburg, Virginia, to Atlanta, Georgia. Montgomery, Alabama Exit 1 to southern terminus in Alabama.
Clinched in South Carolina, North Carolina, Virginia.

I-86 (Eastern)

First: 2000, Most recent: 2006
NY|PA
Eastern terminus (at the time) in Horseheads, New York, to western terminus in Pennsylvania. Future I-86 (as New York 17) east to Windsor.
Clinched (at least for now)!

I-86 (Western)

Never traveled.

Passed western terminus on I-84 in Idaho.

I-87

First: 1970?, Most recent: 2008

Clinched!

I-88 (Eastern)

First: 198?, Most recent: 2008

Clinched!

I-88 (Western)

Probably never traveled.

Crossed on I-355. Crossed on I-294.

I-89

First: 198?, Most recent: 2006
QC|VT VT|NH
Clinched!

I-90

First: 1970?, Most recent: 2008
MA|NY NY|PA PA|OH OH|IN IN|IL WI|MN MN|SD SD|WY WY|MT MT|ID ID|WA
Clinched!

I-91

First: 198?, Most recent: 2008
VT|MA MA|CT
Orleans, Vermont to southern terminus at I-95 in New Haven, Connecticut.
Clinched in Connecticut, Massachusetts.

I-93

First: 198?, Most recent: 2007
VT|NH NH|MA
Southern terminus at I-95 in Massachusetts to Jct I-293 in Manchester, New Hampshire. Jct. US 3 in Manchester, New Hampshire, to Franconia, New Hampshire. Passed northern terminus on I-91 in Vermont.
Clinched in Massachusetts.

I-94

First: 1985?, Most recent: 2007
MI|IN IN|IL IL|WI WI|MN MN|ND ND|MT
Eastern terminus at Port Huron, Michigan, to Becher St. exit in Milwaukee, Wisconsin. 35 St. Exit in Milwaukee, Wisconsin, to Jct. I-894 in Wisconsin. Madison, Wisconsin, to Jct. I-29 in Fargo, North Dakota. Jct. US 10 in West Fargo, North Dakota, to western terminus near Billings, Montana.
Clinched in Michigan, Indiana, Illinois, Minnesota, Montana.

I-95

First: 1978?, Most recent: 2008

Southern terminus in Miami, Florida, to Trenton, New Jersey. NJTP to New Haven, Connecticut. Near New London, Connecticut. East Greenwich, Rhode Island (Exit 9), to Bangor, Maine.
Clinched in Florida, Georgia, South Carolina, North Carolina, Virginia, Maryland, Delaware, Pennsylvania, New Jersey, New York, Massachusetts, New Hampshire.

I-96

First: 2001, Most recent: 2007

Detroit, Michigan, area. Jct. I-275 South to Jct. US 127 in Lansing, Michigan. Passed western terminus on US 31 in Michigan.

I-97

First: 2002, Most recent: 2002

Southern terminus near Annapolis, Maryland, to Jct. Maryland 32. Jct. Maryland 100 to northern terminus at I-695 in Maryland.

I-99

First: 1999 or 2002, Most recent: 2002

Clinched (to 2002 northern terminus near Bald Eagle, Pennsylvania)!

3-Digit Interstates

I-105, California

First: 1985 or 2000, Most recent: 2000

Jct. I-110 to western terminus. (guess)

I-105, Oregon

I-110, California

First: 1985 or 2000, Most recent: 2000

Northern terminus to Gardena area. (guess)

I-110, Texas

I-110, Louisiana

Only: 1998

Probably clinched.

I-110, Mississippi

Never traveled.

Passed northern terminus on I-10.

I-110, Florida

Only: 2003

Clinched!

I-115, Montana

Never traveled.

Passed western terminus on I-15.

I-124, Tennessee

I-126, South Carolina

I-129, Iowa-Nebraska

Only: 2001

Probably clinched.

I-135, Kansas

Never traveled.

Passed northern terminus on I-70. Crossed on US 54 and US 400.

I-140, Tennessee

I-155, Tennessee-Missouri

Never traveled.

Passed western terminus on I-55.

I-155, Illinois

I-164, Indiana

I-165, Alabama

I-170, Missouri

First: 1997, Most recent: 2007

Clinched!

I-172, Illinois

I-175, Florida

First: 2003, Most recent: 2004

Probably clinched.

I-176, Pennsylvania

I-180, Wyoming

I-180, Nebraska

I-180, Illinois

Never traveled.

Passed northern terminus on I-80.

I-180, Pennsylvania

First: 2002, Most recent: 2007

Clinched!

I-182, Washington

I-184, Idaho

I-185, Georgia

I-185, South Carolina

Only: 2004

Northern terminus to Jct. I-85.

I-189, Vermont

First: 2003, Most recent: 2006

Clinched!

I-190, South Dakota

First: 1999?, Most recent: 2003

Clinched!

I-190, Illinois

I-190, New York

First: 198?, Most recent: 2007

Clinched!

I-190, Massachusetts

First: 198?, Most recent: 2006

Clinched!

I-194, North Dakota

I-194, Michigan

I-195, Florida

I-195, Virginia

First: 199?, Most recent: 2002

At least multiplex with I-64. Passed southern terminus on I-95.

I-195, Maryland

Probably never traveled.

Passed northern terminus on I-95. Crossed on the Baltimore-Washington Parkway.

I-195, New Jersey

First: ?, Most recent: 2003

Clinched!

I-195, Massachusetts-Rhode Island

First: ?, Most recent: 2004

Clinched!

I-195, Maine

May have traveled, not sure.

Passed western terminus on I-95.

I-196, Michigan

Only: 2007

Jct. US 31 North near Holland, Michigan, to southern terminus at I-94 in Michigan.

I-205, California

Never traveled.

Passed western terminus on I-580.

I-205, Washington-Oregon

First: 2004, Most recent: 2004

Clinched!

I-215, California

Never traveled.

Passed northern terminus on I-15.

I-215, Nevada

I-215, Utah

First: 1999, Most recent: 2007

All parts south of I-80.

I-220, Louisiana

I-220, Mississippi

I-225, Colorado

I-225, Colorado

I-229, Missouri

I-229, South Dakota

Only: 2003

Clinched!

I-235, Oklahoma

Only: 2004

OKC National Memorial exit to southern terminus at I-35 and I-40.

I-235, Kansas

Never traveled.

Crossed on US 54 and US 400.

I-235, Iowa

First: 1997?, Most recent: 2001

Clinched!

I-238, California

Never traveled.

Passed eastern terminus on I-580. Passed western terminus on I-880.

I-240, Oklahoma

I-240, Tennessee

Never traveled.

Passed both termini on I-40.

I-240, North Carolina

First: 2002?, Most recent: 2005

At least multiplex with I-26 and US 70. Probably clinched.

I-244, Oklahoma

Probably never traveled.

Passed both termini on I-44.

I-255, Illinois-Missouri

First: ?, Most recent: 2007

Clinched!

I-264, Kentucky

Never traveled.

Passed western terminus on I-64, crossed on I-64, crossed on I-65.

I-264, Virginia

First: 199?, Most recent: 2002?

Eastern terminus to Portsmouth.

I-265, Indiana-Kentucky

Never traveled.

Passed western terminus of northern segment on I-64. Passed eastern terminus of northern segment on I-65. Crossed southern segment on I-64. Passed western terminus of southern segment on I-65.

I-270, Colorado

I-270, Illinois-Missouri

First: 1985?, Most recent: 2007

Clinched!

I-270, Ohio

First: ?, Most recent: 2007

Jct. I-70 West Jct. I-71 North. Jct. I-70 East to Jct. I-71 South.

I-270, Maryland

First: ?, Most recent: 2006

Frederick, Maryland, area. Germantown to southern terminus.

I-271, Ohio

First: ?, Most recent: 2007

Clinched!

I-275, Florida

First: ?, Most recent: 2007

Clinched!

I-275, Tennessee

Only: 2002

Clinched!

I-275, Indiana-Kentucky-Ohio

First: 1985?, Most recent: 2005

Jct. I-75 North to Jct. US 50 West. Near CVG airport to Jct. I-71 North.

I-275, Michigan

Only: 2007

Clinched!

I-276, Pennsylvania

First: ?, Most recent: 2004

Eastern terminus at New Jersey border to Exit 343 of the Pennsylvania Turnpike.

I-277, North Carolina

Probably never traveled.

Passed both termini on I-77.

I-277, Ohio

Probably never traveled.

Passed western terminus on I-76.

I-278, New York-New Jersey

First: 197?, Most recent: 2008

Clinched!

I-279, Pennsylvania

First: 2002, Most recent: 2003

Probably clinched!

I-280, California

First: 1985?, Most recent: 2007

Clinched!

I-280, Illinois-Iowa

Never traveled.

Passed both termini on I-74.

I-280, New Jersey

First: 2007, Most recent: 2008

Clinched!

I-280, Ohio

First: 2001, Most recent: 2007

Clinched!

I-283, Pennsylvania

Never traveled.

Passed northern terminus on I-83.

I-285, Georgia

First: 1997?, Most recent: 2005

Jct. I-85 northeast of Atlanta to Jct. I-20 east of Atlanta.

I-287, New York-New Jersey

First: 197?, Most recent: 2008

Clinched!

I-290, Illinois

First: 1997?, Most recent: 2001?

First few miles near eastern terminus. Jct. I-355 to western terminus.

I-290, Massachusetts

First: 198?, Most recent: 2006

Clinched!

I-290, New York

First: 197?, Most recent: 2003

Clinched!

I-291, Connecticut

First: 2006, Most recent: 2006

Clinched!

I-291, Massachusetts

First: ?, Most recent: 2007

Clinched!

I-293, New Hampshire

First: ?, Most recent: 2005

Clinched!

I-294, Illinois

First: 1997?, Most recent: 2001?

Jct. I-190 near O'Hare Airport to Jct. I-55. Jct. I-80 West to southern terminus.

I-295, Maryland-District of Columbia

First: ?, Most recent: 2008

Clinched!

I-295, Florida

First: 198?, Most recent: 2007

Clinched! (At least until the eastern half is complete, if that will be I-295)

I-295, Massachusetts-Rhode Island

First: 198?, Most recent: 2006

Northern terminus to Jct. US 6 East.

I-295, Maine

First: 1995?, Most recent: 2003

Jct. US 1 in Brunswick (as part of I-95 at the time) to southern terminus.

I-295, New Jersey-Delaware

First: 197?, Most recent: 2008

Probably clinched.

I-295, New York

First: 1995?, Most recent: 2006

Clinched!

I-295, Virginia

First: 199?, Most recent: 2007

Clinched!

I-305, California

I-310, Louisiana

Only: 2004

Clinched!

I-335, Kansas

First: ?, Most recent: 2004

Clinched!

I-355, Illinois

First: 1998?, Most recent: 2001

Northern terminus to 75th Street exit.

I-359, Alabama

I-370, Maryland

Only: 2006

Jct. I-270 to Jct. Maryland 255.

I-375, Florida

First: 2003, Most recent: 2004

Clinched!

I-375, Michigan

I-376, Pennsylvania

First: 2002, Most recent: 2003

Clinched!

I-380, California

First: ?, Most recent: 2004

Clinched!

I-380, Iowa

Never traveled.

Passed southern terminus on I-80.

I-380, Pennsylvania

First: 200?, Most recent: 2004

Northern terminus at I-81 to Jct. I-84 East.

I-381, Virginia

Only: 2002

Clinched!

I-384, Connecticut

First: 199?, Most recent: 2006

Clinched!

I-385, South Carolina

Never traveled.

Crossed on I-85.

I-390, New York

First: 1992?, Most Recent: 2007

Jct. I-490 to New York Thruway. Something near Letchworth State Park. Passed southern terminus on I-86.

I-391, Massachusetts

First: 2007, Most recent: 2007

Clinched!

I-393, New Hampshire

I-394, Minnesota

I-395, Massachusetts-Connecticut

First: 199?, Most recent: 2001?

Northern terminus to northeastern Connecticut. Putnam, Connecticut, area. Norwich, Connecticut, to Uncasville, Connecticut.
Clinched in Massachusetts.

I-395, District of Columbia-Virginia

First: 198?, Most recent: 2000?

Probably clinched.

I-395, Florida

I-395, Maryland

Only?: 2001?

Probably clinched.

I-395, Maine

I-405, California

First: 1985 or 2000, Most recent: 2007

At least from Olympic Blvd. to southern terminus at I-5.

I-405, Oregon

First: 2004, Most recent: 2004

Jct. US 30 West to southern terminus.

I-405, Washington

I-410, Texas

First: 2004, Most recent: 2005

Multiplex with I-35 northeast of San Antonio. Crossed on I-10 west of San Antonio. Crossed on I-37. Crossed on I-10 east of San Antonio.

I-430, Arkansas

Only: 2005

Passed northern terminus on I-30. Jct. I-630 to southern terminus.

I-435, Missouri-Kansas

First 199?: Most recent: 2003

Multiplex with I-29. Jct. I-470 to Jct. I-35. Crossed on I-70 in both Kansas and Missouri.

I-440, Arkansas

Never traveled.

Passed northern terminus on I-40.

I-440, North Carolina

First: 2000, Most recent: 2005

Clinched!

I-440, Tennessee

Never traveled.

Passed eastern terminus on I-24. Crossed on I-65. Passed western terminus on I-40.

I-459, Alabama

Never traveled.

Crossed on I-65.

I-464, Virginia

I-465, Indiana

First: 198?, Most recent: 2007

Jct. I-74 West to Jct. I-69 (north part of loop). Jct. I-70 East to Jct. I-70 West and Jct. Airport Expressway to Jct. US 36 West (south part of loop).

I-469, Indiana

Never traveled.

Passed both termini on I-69.

I-470, Kansas

First: ?, Most recent: 2004

Eastern terminus at I-70 to Jct. I-335 South.

I-470, Missouri

First: ?, Most recent: 2004

Clinched!

I-470, Ohio-West Virginia

First: ?, Most recent: 2004

Clinched!

I-471, Kentucky-Ohio

First: 2002?, Most recent: 2002

Clinched!

I-474, Illinois

I-475, Georgia

I-475, Michigan

I-475, Ohio

Only: 2003

Eastern terminus to Jct. US 23 North.

I-476, Pennsylvania

First: 2000, Most recent: 2007

Northern terminus to Dupont. Crossed on I-78. Jct. I-80 to southern terminus.

I-480, Iowa-Nebraska

Never traveled.

Passed eastern terminus on I-29. Probably passed western/southern terminus on I-80.

I-480, Ohio

First: 1998?, Most recent: 2007

Jct. I-271 South to western terminus.

I-481, New York

First: ?, Most recent: 2007

Jct. I-90 to southern terminus.

I-485, North Carolina

Never traveled.

Passed both termini on I-85. Crossed on I-77.

I-490, New York

First: ?, Most recent: 2007

Eastern terminus at I-90 to Jct. I-390.

I-490, Ohio

Probably never traveled.

Passed western terminus on I-90.

I-494, Minnesota

First: 1997, Most recent: 2004

Passed eastern terminus on I-94. Jct. I-35E to Bloomington. Passed western/northern terminus on I-94.

I-495, Delaware

First: 199?, Most recent: 2005

Clinched!

I-495, Massachusetts

First: 197?, Most recent: 2008

Clinched!

I-495, Maryland-District of Columbia-Virginia

First: 1978?, Most recent: 2008

Clinched!

I-495, New York

First: 198?, Most recent: 200?

Probably Jericho to western terminus.

I-496, Michigan

Only: 2007

Multiplex with US 127 in Lansing and East Lansing.

I-505, California

Only: 2006

Clinched!

I-510, Louisiana

Never traveled.

Passed northern terminus on I-10.

I-515, Nevada

Only: 2003

Jct. Flamingo Rd. to southern terminus.

I-516, Georgia

Never traveled.

Crossed on US 80. Crossed on I-16.

I-520, Georgia-South Carolina

Only: 2006

Crossed on US 1. Exit 1C to western terminus at I-20.

I-526, South Carolina

First: 2003, Most recent: 2007

Eastern terminus to Dorchester Rd. Passed western terminus on US 17.

I-530, Arkansas

I-535, Minnesota-Wisconsin

First: 1997, Most recent: 2003

Clinched!

I-540, Arkansas

Only: 2004

Multiplex with I-40.

I-540, North Carolina

Never traveled.

Passed eastern terminus on US 1. Passed western terminus on I-40.

I-564, Virginia

I-565, Alabama

First: 2007, Most recent: 2007

Memorial Parkway in Huntsville, Alabama, to western terminus in Mooresville, Alabama.

I-575, Georgia

I-579, Pennsylvania

Never traveled.

Passed northern terminus on I-279. Passed southern terminus on I-376.

I-580, California

First: 1985, Most recent: 2007

Eastern terminus on I-5 to Jct. I-980. Multiplex with I-80. Passed western terminus on US 101.

I-580, Nevada (hidden route)

I-581, Virginia

First: 2002, Most recent: 2006

Clinched!

I-585, South Carolina

Never traveled.

I-587, New York

First: ?, Most recent: 2003?

Clinched!

I-590, New York

First: ?, Most recent: 2007

Clinched!

I-595, Florida

First: 2003, Most recent: 2004

Clinched!

I-595, Maryland (unsigned)

I-605, California

Probably never traveled.

Crossed on I-10. Crossed on I-5. Passed southern terminus on I-405.

I-610, Louisiana

First: 1998?, Most recent: 2003

Clinched!

I-610, Texas

First: 2003, Most recent: 2004?

Jct. I-45 North along east loop to Jct. I-45 South. Jct. Texas 288 to Bellayre Blvd.

I-630, Arkansas

First: 2004, Most recent: 2005

Clinched!

I-635, Missouri-Kansas

I-635, Texas

First: ?, Most recent: 2003

Crossed on I-30. Jct. Texas 352 to southern terminus.

I-640, Tennessee

Never traveled.

Crossed at I-75/I-275 junction.

I-664, Virginia

I-670, Missouri-Kansas

Probably never traveled.

Passed eastern terminus on I-70. Passed western terminus on I-70.

I-670, Ohio

Only: 2005

Crossed on I-71. Ohio 315 to western terminus.

I-675, Georgia

I-675, Michigan

Never traveled.

Passed northern terminus on I-75. Passed southern terminus on I-75.

I-675, Ohio

Only: 2005.

Northern terminus to Xenia Ave. Passed southern terminus on I-75.

I-676, New Jersey-Pennsylvania

Only: 2000

Jct. I-95 to western terminus on I-76.

I-678, New York

First: 198?, Most recent: 2005

Clinched!

I-680, California

Never traveled.

Passed northern terminus on I-80. Crossed on I-580. Passed southern terminus on US 101.

I-680, Iowa-Nebraska

First: 2001, Most recent: 2003

Eastern terminus to Jct. I-29 South.

I-680, Ohio

I-684, New York-Connecticut

First: ?, Most recent: 2008

Clinched!

I-690, New York

First: ?, Most recent: 2007

Clinched!

I-691, Connecticut

I-694, Minnesota

First: 1997, Most recent: 2004

Jct. I-94 West to Jct. I-35E South.

I-695, Maryland

First: 1978?, Most recent: 2007

Jct. I-95 North, clockwise to Jct. US 1 North. (only missing one small chunk)

I-695, New York

First: ?, Most recent: 2006

Clinched!

I-696, Michigan

First: ?, Most recent: 2006

Eastern terminus at I-94 to Jct. I-75. Passed western terminus on I-96.

I-705, Washington

I-710, California

First: 2007

Crossed on I-10. Jct. I-5 to Jct. I-405.

I-759, Alabama

I-780, California

Never traveled.

Passed western terminus on I-80.

I-787, New York

First: 197?, Most recent: 2007

Clinched!

I-790, New York

First: ?, Most recent: 2005

Clinched!

I-794, Wisconsin

Never traveled.

I-795, Maryland

Never traveled.

Passed southern terminus on I-695.

I-805, California

Probably never traveled.

Passed northern terminus on I-5.

I-820, Texas

Only: 2003

Crossed on I-35W north of Ft. Worth. Crossed on I-30 east of Ft. Worth. Multiplex with I-20.

I-865, Indiana

Never traveled.

Passed eastern terminus on I-465. Passed western terminus on I-65.

I-878, New York

I-880, California

First: 1985, Most recent: 2007

Northern terminus to Jct. California 92. Crossed on US 101 in San Jose. Passed southern terminus on I-280.

I-890, New York

First: 197?, Most recent: 2008

Clinched!

I-894, Wisconsin

First: 2007

Clinched!

I-895, Maryland

First: 198?, Most recent: 2006

Clinched!

I-895, New York

Never traveled.

Passed southern terminus on I-278.

I-910, Louisiana

I-980, California

Only: 2007

Clinched!

I-985, Georgia

Only: 2005

Clinched! (to 2005 northern terminus near Gainesville)

I-990, New York

Never traveled.

Passed southern terminus on I-290.

Hawaii Interstates

I-H1

First: 2006, Most recent: 2006

Eastern terminus to Kapahulu Ave. Punahou Street to western terminus.

I-H2

Only: 2006

Clinched!

I-H3

First: 2006, Most recent: 2006

Clinched!

I-H201

First: 2006, Most recent: 2006

Clinched!